In the slope intercept form, b represents the y intercept.
y = mx +- b
Therefore, if the y intercept is at 6, the formula of the line will look like
<span>y=mx + 6
</span>
This eliminates the first two options,

and

and leaves behind

and

Since the line you indicated is sloping downwards towards the lower right hand corner. It must have a negative slope.
Therefore, the answer must be the 3rd option.
<span>

</span>
She will have 19.5 cups of purple paint.
I couldn’t write the explanation of how you get the answer, but look your question up on Brainly and it’ll give you your explanation.
Hope this helped! :)
<h2>Given :</h2>
<h2>Solution : </h2>

Through the statement above we have,
_____________________________

I need more info to answer your question. Can please tell me the answer choices?