Which test point holds true for y − 2x ≤ 1? a. (0, 2) b. (-2, 4) c. (1, 4) d. (5, 0)

Try each one:

A) 2 - 2(0) <=? 1

0 IS less than or equal to 1, so it works.

B) 4 - 2(-2) <=? 1

4 + 4 = 8, which is not less than or equal to 1.

C)4 - 2(1) <=? 1

4 - 2 = 2, which is not less than or equal to 1.

Finally, D) 0 - 2(5) <= ? 1

0 + 10 = 10, which isn’t less than or equal to 1.

The only one that works is (A).

answer: the first one

step-by-step explanation: use a calculator and divide the minutes by the dollars.

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.