The ninth-grade class has 93 students. Each student takes a current events class, a foreign language class, or both a current events class and a foreign language class. There are 70 ninth-graders taking a current events class, and there are 54 ninth-graders taking a foreign language class. How many ninth-graders take only a current events class and not a foreign language class?

31 students

Step-by-step explanation:

Because the class has 93 students, and there are a total of 124(70+54) classes taken, 124-93 students, or 31 students taking both classes.

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step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is