Triangles IJK and LMN are similar. Then, the proportion between their similar sides must be equal. That is:
IJ/ML = JK/MN = IK/LN
where:
IJ = x
JK = 54
IK = y
MN = 42
ML = 28
NL = 35
In order to find the value of y, you consider the equation JK/MN = IK/LN, and solve for y, just as follow
JK/MN = IK/LN replace by the values
54/42 = y/35 multiply both sides by 35
(54/42)(35) = y
45 = y
Hence, y = 45
The relationship is a function. A function is an equation of graph that has no repeated x values. In this graph, each x value has a different y value, whether it's (1, 70) or (9,95)
If Rachel gets anything other than a 95, the x value of 2 will have more than one y value: 95 and whatever grade Rachel gets. Therefore it will no longer be a function.
So youre a given two points. The points (0,15) and (150,0). First
solve the slope of the graph
M = (y1 – y2) / (x1 – x2)
M= (15 – 0) / ( 0 – 150)
M = - 0.1
Using point (15,0)
15 = -0.1(0) + b
15 = b
So y = mx + b
Y = -0.1x + 15
Answer: 2.75 minutes
Step-by-step explanation:
