What is this number written in standard form? 45 ten thousands, 13 thousands, 19 hundreds, 23 tens, 19 ones

Write the equation below the represents the line passing through the point (-3, -1) negative one with a slope of 4

The square root of 9x plus 7 plus the square rot of 2x equall to 7

If you double the input of a function and it results in half the output, and if you triple the input and it results in a third of the output, what can be guessed about the function? check all that apply.