We have this equation for the slope is: y=mx+b which m is the slope and b is the y-intercept, so we have y=20-15x or y=-15x+20, and we already know that the slope is -15 and y-intercept is 20. As a result, the student's error is that he thinks that 20 is the slope because it is the first number. Hope it help!
Answer:
x-intercept (2,0) or x=2
y-intercept (0,-4) or y=-4
Step-by-step explanation:
4x-2y>8
2x-y>4
2x-4>y
y<2x-4
y=2x-4
when y=0
2x=4
x=2
x-intercept is (2,0)
and y-intercept is (0,-4)
put x=0,y=0
0-0>8
or 0>8 which is not true. so (0,0) does not lie on the graph.
so graph lies right of the line .
X = -4
the slope is undefined as it only passes through the x-axis on -4.
<h3>
Therefore they are perpendicular.</h3>
Step-by-step explanation:
A equation of line is
y =mx +c
Here the slope of the line is m.
Given equations are
x - 2y = 18
⇔-2y = -x +18
............(1)
and 2x + y = 6
⇔y = -2x +6 ............(2)
Therefore the slope of equation (1) is
= 
Therefore the slope of equation (2) is
= -2
If two lines are perpendicular, when we multiply their slope we get -1.
therefore,
=. (-2) = -1
Therefore they are perpendicular.
Answer:
domain
Step-by-step explanation:
range
