Question

Martin has a gift card to a coffee shop. Each day he buys the same coffee. This table shows the amount remaining in dollars on the gift card on different days.



Days 2 4 5 7
Amount remaining $24.10 $18.20 $15.25 $9.35
Which equation represents the situation?

y+24.10=2.95(x−2)y+24.10=2.95(x−2)

y−18.20=−2.95(x+4)y−18.20=−2.95(x+4)

y−9.35=−2.95(x−7)y−9.35=−2.95(x−7)

y+15.25=−2.95(x+5)

Answer 1

(2,24.10)(4,18.20)
slope (m) = (18.20 - 24.10) / (4 - 2) = -5.9/2 = -2.95

y - y1 = m(x - x1)
slope(m) = -2.95
(7,9.35)...x1 = 7 and y1 = 9.35
now we just sub
y - 9.35 = -2.95(x - 7) <===

Answer 2

Answer: y - 9.35 = -2.95(x - 7

Step-by-step explanation: