Question

the ordered pairs (6, 8), (9,12),(x, 20),(18,y) represent a proportional relationship. find the value of x and y. (choose two answers)

a. x=8
b. x=12
c. x=15

a. y=21
b. y=24
c. y=28

Answer 1

Answer:

• We have two points so let's use them effectively
• We know that the x changes by 3 and the y changes by 4
• Hence to get to y=20 we moved 2 times (8 units) so it's 9+ 3 + 3= 15
• So x= 15
• Now for y We have an x= 18, from 9 we moved 9 units of 3 total intervals: 4+4+4+12= 24
• y=24