Answer:
y=-x-2
Step-by-step explanation:
slope-intercept form is y = mx+b
slope is change in y over change in x, which is -5-(-3)/(3-1) = -1
y = -x+b
plugging in a point, like (1,-3), we have -3 = -1+b. b = -3+1 = -2
y = -x-2
46 degrees
the ratio is
miles/hour
= 230/4
= 115/2
so the ratio is 115:2