Question

audrey is taking a multiple choice test. her grade is given by the equation $y = 90 - 2x$, where $y$ represents her final score and $x$ represents the number of questions she got wrong. what could the number 90 represent in the equation?

answer

the score she would get if she only missed one question.
the number of problems on the test.
her score with 0 problems wrong.
the points she loses for every wrong question.

Explanation:

The equation is in the form of a linear function $y = b - mx$, where $b$ is the y-intercept. The y-intercept occurs when $x=0$. Here, $x$ is the number of wrong questions, so when $x=0$ (no wrong questions), $y=90-2(0)=90$. This value corresponds to the score when no questions are missed.

Answer:

Her score with 0 problems wrong.