I would say 80, because without an estimate it'd be 79 and 79x5=395. So 80x5=400, which is the estimate of 395. So 80 is the answer
You put the values of x into the equation to work out y, so the y column would be -5, -1, 3, 7 (for question 6)
For question 7, the y column would be 2,2,0,-2
Use these values to draw the graphs :)
Y=-4x+5 I believe you just rewrite the equation like this
Answer: So to begin, subtract 4 from both sides of the equation. That makes the equations now -28 + 4y. Divide both sides by 4 to get -7 = y or y = -7
Hope this helps you
Step-by-step explanation:
