3
QuizMultiple Choice

Solving Quadratic Equations

Question 3 • LVA- Mathematical Modeling - Fall

When graphing a parabola, how are the points for the x and y-intercepts found?

Answer
A
use the axis of symmetry on the graph and approximate the intercepts
B
look at the coefficients a and b
C
set x and y equal to zero and solve for each
D
set x and y equal to each other

Explanation

An x-intercept is where the graph crosses the x-axis, so its y-value is 0; set y = 0 and solve for x. A y-intercept is where the graph crosses the y-axis, so its x-value is 0; set x = 0 and solve for y. This is choice C: set x and y equal to zero and solve for each.

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