# Correct Ordered Pair

**URL:** <https://cl.desmos.com/t/correct-ordered-pair/908>\
**Category:** Questions\
**Tags:** dashboard\
**Created:** [April 28, 2020, 8:29pm UTC](https://cl.desmos.com/t/correct-ordered-pair/908 "2020-04-28T20:29:44Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Janna\_Thorson](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/janna_thorson/32/720_2.png) [@Janna\_Thorson](https://cl.desmos.com/u/Janna_Thorson)\
**Post date:** [April 28, 2020, 8:29pm UTC](https://cl.desmos.com/t/correct-ordered-pair/908/1 "2020-04-28T20:29:44Z")

</div>

I love Desmos and am new to CL, trying to navigate my way around.

I have a problem where the students are given two linear equation that are graphed. They need to tell the point of intersection (solution to systems of equations). I have the input set so that it appears on the graph when the enter it submit it, but I cannot, for the life of me, figure out how to get it to read as a correct answer for the dashboard.

y = 1/2x + 4  
y = 3/4 - 1

Solution is (4,2)  
If the students type in (4,2), how do I get it to read this as the answer?

---

<div class="post-metadata">

**Author:** ![Daniel\_Grubbs](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/daniel_grubbs/32/719_2.png) [@Daniel\_Grubbs](https://cl.desmos.com/u/Daniel_Grubbs)\
**Post date:** [April 28, 2020, 10:37pm UTC](https://cl.desmos.com/t/correct-ordered-pair/908/2 "2020-04-28T22:37:47Z")

</div>

It seems that a common problem is setting the graph to readOnly, but you have to use parseOrderedPair and .x and .y to read the answer.

xCoordinate=parseOrderedPair(input.latex).x  
yCoordinate=parseOrderedPair(input.latex).y

then use those to check. You could set variables like I just did or write one when-otherwise correctness check.