Enable text based alternatives for graph display and drawing entry

Try another version of this question

Part 1: Graph the lines on the grid below
`y = -2x+5`
`y = 1/2x-3`
12345678910-1-2-3-4-5-6-7-8-9-1012345678910-1-2-3-4-5-6-7-8-9-10
Clear All Draw: Line
Part 2: Select the word that best describes the relationship between the two lines.