Calculate the scale factor. a. k=1/7 b. k=5/7 c. k=7/5 d. k=5

Answer is Option B = 5/7

Explanation:

A scale factor is a number which scales, or multiplies, some quantity. In the equation y = Kx, K is the scale factor for x. K is also the coefficient of x, and may be called the constant of proportionality of y to x.  

For big pictures or maps, images should be drawn without affecting the shape in a small paper.  Hence dimension of x is reduced to y with constant proporiton k which is scale factor

Here we find that original length of PC = 21

In image P'C = 15

Hence scale factor=15/21 = 5/7

what is the approximate angle of acb if abc is 25cm and the length of segment bc is 15

step-by-step explanation:

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is