Time taken to complete each page = 800/160 = 5 minutes
Number of pages in a textbook is 50
Time taken to read the textbook =
5 x 50 = 250 minutes
(If you want you can convert the number to simpler form by converting to hours )
250/60 = 4 x 10/60
4 hours 10 minutes
Sin63= 0.89
cos27= 0.89
tan57= 1.54
Take a look at f(x) = -x + 1. Its slope is negative and its y-intercept is +1.
Right away, we can eliminate the 3rd and 4th graphs, because they show positive slopes for x≤1.
Take another look: f(x) = -x + 1. When x = 0, y = 1. Thus, the y-intercept is (0,1).
The first graph shows this intercept correctly; the second does not. So the correct answe is "the first graph."
Slope
m = (y2-y1)/(x2-x1)
m = (10 - 7)/(2 --1)
m = 3/3
m = 1
To find the equation
y = mx + b
m is slope
y = 1x + b
plug in one of the equations to solve for b
10 = 1(2) + b
10 = 2 + b
subtract 2 from both sides
8 = b
The equation is
y = 1x + 8
or you can write it as
y = x + 8
Hope this helps
