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greg777
22.11.2019 •
Mathematics
Graph the linear equation. find three
points that solve the equation, then plot
on the graph.
x - 4y = -18
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Ответ:
Part 1) The graph in the attached figure
Part 2) Three points that solve the equation could be (-18,0),(0,4.5) and (-2,4)
Step-by-step explanation:
we know that
To graph a line we need to plot two points
If a point solve the linear equation, then the point is a solution of the linear equation
step 1
Find the first point that solve the equation
Find the x-intercept
The x-intercept is the value of x when the value of y is equal to zero
For y=0
The x-intercept is the point (-18,0)
step 2
Find the second point that solve the equation
Find the y-intercept
The y-intercept is the value of y when the value of x is equal to zero
For x=0
The y-intercept is the point (0,4.5)
step 3
With the intercepts graph the line
Plot the intercepts and join the points to graph the line
using a graphing tool
see the attached figure
step 4
Find the third point that solve the equation
Assume a value for x and then solve for y
I assume x=-2
substitute in the linear equation and solve for y
The third point is the point (-2,4)
Ответ:
Domain is the X values and range is the y values.
Domain {-4,3,5,7}
range {-9,-6,-3,-2,9,113}
It isn't a function bc there are multiple y values for the X value of -4.