Answer:
0
Step-by-step explanation:
all the question is asking is
if x is 2 then what is y
the line on the left is downward facing line which ends at
(2,0) <- where is x is 2 and y is 0
the upward facing line on the right does start at (2,3)
but the dot there is a
hollow dot
hollow dot represents excluded value
Answer:
b=-79
Step-by-step explanation:
(10,11) means x=10,y=11
m=9 b=?
y=mx+b
Make b the subject of formula
b=y-mx
b=11-9(10)
b=11-90
b=-79
8.25% (decimal) and 33/400 (fraction)
Answer:
y = -2 when x = 0
Step-by-step explanation:
We are given points on the line such as ( 2, 2) and (6, 10) so we can find the equation of the line then find point (x=0, y=?).
General equation of the line is y = mx +b, where m is the slope and
b is y-intercept (where the line crosses the y-axis)
The slope m = (y2-y1)/ (x2-x1) = (10-2)/(6-2) = 8/4 = 2
Now the equation is y = 2x +b
To find b we substitute any of the points that are on the line, for example
(x=2, y=2) in the equation 2=2*2+b; 2-4 =b; -2 = b
The equation is y=2x -2
If x= 0 then y=2*0 -2; y = -2
