The answer for this is the last one because:
First, simplifying the linear equation, we get:
We know that the linear equation form is y=mx+b, where m is the slope and b is the y-intercept.
The slope is 9/10 because it is in the same position as the "mx" in the slope formula. Therefore, m=9/10
Now, lets find the y intercept. We can always set the other coordinate as 0, and in this case, y=0x-9/10, or y=-9/10. The y intercept is -9/10.
multiplication is basically adding up a certain number a certain amount of times. 2 times 2 is basically 2+2.
Don't get it? Here's an example.
If you have 2 friends who both have 2 cookies, how many cookies are there in total? 2+2=4.
The same works with other numbers, for example, 4 times 3, which is just adding 4 3 times, or 4+4+4=12
Another real life example.
There are 4 fruits in a basket, how many fruits are in 3 baskets?
any number times 1 is itself. Therefore 5/8*1=5/8
Any number divided by a fraction in basically that number times the reciprocal of the second number. The reciprocal of a fraction is just the denominator and the numerator switched.
1/2 / 15/16 (note here the / in between the two numbers is divide)
= 1/2 * 16/15