Answer:
y = -0.3x + 105
Step-by-step explanation:
slope-intercept form: y = mx + b
so look at the first two points given (25, 97.5) and (35, 94.5),
you can find its slope m by using m = (change in y) / (change in x)
= (94.5-97.5) / (35-25)
= (-3) / (10) = -0.3
now you know y = -0.3x + b, sub the first point (25, 97.5) into the equation of this line, you get 97.5 = (-0.3)*(25) + b => b = 97.5 - (-7.5) = 105
so final answer y = -0.3x + 105
Done :)
