Answers GA-8th Grade MathematicsEquivalent Equations

Equivalent Equations Answers

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What is written in slope-intercept form?

y = negative one-half x + 3

y = one-half x minus 3

y = negative 2 x + 3

y = 2 x minus 3

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Which represents the equation when solved for y?

y = negative 2 x + 4

y = 2 x + 4

y = negative 2 x minus 4

y = 2 x minus 4

The formula for the area of a triangle is . Which is the equivalent equation solved for h?

StartFraction 2 A Over b EndFraction = h

One-half A b = h

2 A b = h

StartFraction a Over 2 b EndFraction = h

What is written in slope-intercept form?

y = five-thirds x + 5

y = negative five-thirds x minus 5

y = five-thirds x minus 5

y = negative five-thirds x + 5

What is written in slope-intercept form?

y = 5x

y = negative 5 x

x = one-fifth y

x = 5 y

Darpana solved the equation for a. Her steps are shown below:1. Multiply by 3: 2. Subtract b: 3. Divide by c: Which statement about Darpana’s work is true?

In step 1 she needed to divide by 3 rather than multiply.

In step 2 she needed to add b rather than subtract.

In step 3 she needed to subtract c rather than divide.

Darpana solved the equation correctly.

The equation is written in standard form. What is the first step when writing an equivalent equation which solves for y?

Add 7x to both sides of the equation.

Subtract 7x from both sides of the equation.

Add 30 to both sides of the equation.

Subtract 30 from both sides of the equation.

The equation is written in standard form. What is the first step when writing an equivalent equation which solves for x?

Divide both sides of the equation by 36.

Multiply both sides of the equation by 6.

Add 9y to both sides of the equation.

Subtract 9y from both sides of the equation.

Leah is writing an equivalent equation which solves for y. What should be her next step?

Add 4y to both sides of the equation.

Subtract 4y from both sides of the equation.

Multiply both sides of the equation by 4.

Divide both sides of the equation by 4.

The formula for electrical power is . Which is the equivalent equation solved for i?

StartFraction P Over V EndFraction = i

StartFraction V Over P EndFraction = i

P V = i

P minus V = i

What is written in slope-intercept form?

y = 3 x + 2

y = 3 x minus 2

y = 12 x minus 8

y = negative 12 x minus 8

Marshall is writing an equivalent equation to solve for x. What should be his next step?

Add 5x to both sides of the equation.

Subtract 5x from both sides of the equation.

Multiply both sides of the equation by 5.

Divide both sides of the equation by 5.

Ji Sunn spent $24 at the local farmer’s market. She bought apples that cost $4 per pound and raspberries that cost $6 per pound. Which equation can be used to represent the amount of raspberries, r, in terms of apples, a?

r = 4 minus two-thirds a