The x-intercept is the x-coordinate of the point where a graph crosses the x-axis. what is the slope of a line that has a y-intercept but no intercept? explain. all i can come up with is that the line is a vertical line starting from any y-intercept and in this case the answer would be undefined. is there a better answer?

The slope of a line that has a y-intercept, but no x-intercept is 0.

Step-by-step explanation:

A line that crosses the y-axis but not the x must be horizontal. Therefore, it has no slope.

In the example that you were working on, it will have an x-intercept. All vertical lines will hit the x-axis. An undefined line would likely have no y-intercept.

x=30

step-by-step explanation:

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.