Error Analysis

The error in this problem had to do with the equation.

The first problem was that it was not in slope-intercept form which would be y= 10x +9. The other problem is, the slope is incorrect. It should be 10/5or 2, making the quation y=2x+9 because the"y"s dont go up by ten. they go up by five.

Point (1,-2) is not a solution because it only solves the first equation. If u plug in 1 for x and -2 for y the piont will work in the first equation but not for the second one.

For problem #20, the error had to do with line. The line should be dotted and not solid because the equation does not say greater than and equal to or less than and equal to.

For problem #21, the problem was the position of the shading. Because the line is solid, the shading should be below the line and not above it.

For problem #22, the line that was graphed should be dotted and not solid because it doesn't say greator than and equal to or less than or equal to.
 For problem #23, the problem was with  the location of the shading. The shading should be above and not below the line.