Y=-9x because y=mx+b is the formula so plug in the slope, m(-9) and the x-intercept, x(0)
c is the answer cuz a is a straight line of dots b is a no solution plot and d is a poitive plot
5.7t < 420 divide both sides by 5.7
5.7 5.7
t < 73.68
The price before the tip was 8 dollars
Answer:
value of x= 4 and value of y =1.