5
AssignmentMultiple Choice

Using Graphs to Determine the Number of Solutions

Question 5 • (AG Q4) Keystone Algebra 1 Block: 25-26 (DDiamond)

How do you find the x- and y-intercepts of an equation?

Answer
A
To find the x-intercept, substitute 0 for x. To find the y-intercept, substitute 0 for x.
B
To find the x-intercept, substitute 0 for x. To find the y-intercept, substitute 0 for y.
C
To find the x-intercept, substitute 0 for y. To find the y-intercept, substitute 0 for x.
D
To find the x-intercept, substitute 0 for y. To find the y-intercept, substitute 0 for y.

Explanation

An x-intercept lies on the x-axis, where the y-coordinate is 0, so substitute 0 for y and solve for x. A y-intercept lies on the y-axis, where the x-coordinate is 0, so substitute 0 for x and solve for y. Therefore, the correct choice is “To find the x-intercept, substitute 0 for y. To find the y-intercept, substitute 0 for x.”

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