To find the x and y-intercept, we can write an equation in slope intercept form.
first, we need to find the slope
the formula for slope is
m= (y₂-y₁)/(x₂-x₁)

now just put any two points into the equation
m=(10-5)/(-9-(-15)
m=5/6

so now we can write the slope-intercept equation
y=5/6x + b

in a slope-intercept equation, b is equal to the y-intercept, so we can take one of our 3 pairs of points and put them into the equation to solve for b

15= 5/6(-3) +b
15=-2.5 + b
17.5 = b
so now we know the y-intercept is (0,17.5)

now we can write the equation as
y= 5/6x + 17.5

since the x intercept is when y=0, we can set y to 0 and then solve for x

0= 5/6x +17.5
-17.5 = 5/6x
-21 = x

by setting y to zero, we figured out that the x-intercept is (-21,0)

hope this helped!

6 0

3 years ago

help me with this pleassssssssssseeeeeeee this is for test corections and also whoever is trying to text me i to won't let me te

vazorg [7]

Answer:

A. 15.6

Step-by-step explanation:

Do a² + b² = c²

Your a is 8 and you b is 12 plug in

8² + 12² = c²

64 + 144 = c²

208 = c² (square root them)