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Q: Is point 2 1 on the line represented by the equation x plus 2y equals 5?

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Point (1,4) is NOT on the line x + 2y = 5

At what point does line represented by the equation 8x + 4y = -4 intersects the y-axis, and at what point in the negative direction of x-axis.

A line is represented by an equation. Each solution of the equation is a point on the line, and each point on the line is a solution to the equation. So the line is just the graph of the solution set of the equation.

5

Which of the following is the point-slope equation of the line with a slope equals -4 and a point of -2 3?

There is no "equals" sign therefore "x-9" is NOT an equation.

-1/5

q2

-4

The slope is -0.2

11

The slope is -4

No

The graph of [ y = 7 ] is a straight horizontal line, passing through the point [ y = 7 ]on the y-axis. The slope of a horizontal line is zero.

The y-intercept of a linear equation is the point where the graph of the line represented by that equation crosses the y-axis.

A linear equation is the equation of a line and that consists of an infnite number of points. What you have, in x = -4 and y = -1/3, is a single point. A single point is not a line and so there cannot be a linear equation (suitable for a line) to represent a point.

x = -3 represents a vertical line whose slope is undefined.

Without an equality sign the expression can not be considered to be an equation

5 and the y intercept is 2

It's the equation of a straight line. Every point on the line is a solution to the equation. There are an infinite number of them.

Yes its on the line.

The diagonal line collapses into a single point on that line.

Without an equality sign the given expression can't be considered to be a straight line equation.

It's the equation of a straight-line graph. Every point on the line is a solution of the equation. There are an infinite number of them.

it equals 1